function Person(){
	Person.prototype.name = 'zhangsan'
	Person.prototype.age = 12
	Person.prototype.sayHello = function(){
		console.log('hello')
	}
}

var p1 = new Person();
var p2 = new Person();
console.log(p1.name);
p2.name = 'lisi';
console.log(p2.name);
console.log(p1.sayHello == p2.sayHello)



